potential to spread a cold. with the flu sometimes it is harder to tell. the cold kind of comes on slowly with a sore throat and you're feeling bad. the best way to tell the difference between a cold and flu i tell patients if you have symptoms from the neck up, sneezing, coughing, sore throat, that is definitely more cold. symptoms from the neck down, body aches, fever, tired, feeling miserable, that is usually the flu. harris: i want to turn quickly just to small children. as jon is saying when you have symptoms yourself you know how you're feeling but a little child can't always tell you. how can you tell by looking at your child, yeah, it is time to go to the doctor? >> i mean children look, they get very high fevers. they usually can tolerate that a little better than adults but if your child isn't eating or drinking and they're laying around, you can try to give them if avenue a fever some anti-fever medicine to see how they do. if they perk right up, usually could be just a cold.